Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1991-09-26
1993-10-19
Heitbrink, Jill L.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
26432815, 425549, 425552, 425564, 425568, B29C 4538
Patent
active
052543056
ABSTRACT:
A nozzle for injecting a moldable material has a nozzle body which defines a nozzle channel leading to the nozzle outlet. The nozzle outlet is controlled by an axially slidable nozzle pin extending coaxially through the nozzle channel. A guide sleeve slidably supports the nozzle pin until it reaches the region adjacent the nozzle outlet. As a result, the length along which the nozzle pin is exposed to the moldable material is significantly reduced, thereby substantially eliminating the bending stresses applied to the nozzle pin by the pressure asymmetries in the incoming moldable material. The nozzle pin may also be retracted fully within the guide sleeve to provide an unobstructed path for the moldable material to flow through and consolidate as it approaches the nozzle outlet. With this arrangement, the incoming moldable material may be conveyed towards the nozzle channel asymmetrically with respect to the axis of the nozzle pin without any deleterious effect.
REFERENCES:
patent: 3780764 (1973-12-01), Geist
patent: 4213751 (1980-07-01), Fernandez
patent: 4238182 (1980-12-01), Mollier
patent: 4378963 (1983-04-01), Schouenberg
patent: 4412807 (1983-11-01), York
patent: 4592711 (1986-06-01), Capy
patent: 4657496 (1987-04-01), Ozeki et al.
patent: 4663811 (1987-05-01), Gellert
patent: 4795126 (1989-01-01), Crandell
patent: 4925384 (1990-05-01), Manner
patent: 4964795 (1990-10-01), Tooman
patent: 5059113 (1991-10-01), Ito et al.
patent: 5078589 (1992-01-01), Osuna et al.
Fernandez Louis
Hofstetter Otto
Heitbrink Jill L.
Otto Hofstetter AG
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